Please help me with these:

1. 5/8 + 5/6 =

2. 2 3/5 + 4 4/5 =

3. 13 1/2 + 7 2/3 =

4. 3/8 - 3/8 =

Thanks!

1. 5/8+5/6=

15/24+20/24=35/24
2. 2 3/5+4 4/5= 6 7/5= 7 2/5
3. 13 1/2+7 2/3=13 3/6+7 4/6=20 7/6=
21 1/6
4. 3/8 - 3/8 = 0